I also don't see the need for dual boot. I have been running '46 since last September on Win7 64 bit with no issues whatsoever. Apart from updating the drivers for graphics, hardware etc. to the new OS when I installed it, the only thing I had to get for '46 was a compatible 'il2fb.exe' that was readily available off the internet. As far as I know this is no longer necessary because any of the mod packs has .exe's compatible with Win7 now.
I only require a computer for browsing, gaming and a bit of 'Office' work and this setup works fine for me. As for free IT advice Trib, that's how most of us have survived throught the years mate!!